JPH1178339A - Punch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate punching and eyelet mounting in a simple and quick fashion. SOLUTION: This punch comprises a support table 10, a pressing member 20 mounted so as to move forward and backward relative to the support table 10, a coil spring 22 for urging the pressing member 20 in a direction in which it separates from the support table 10, and a punch fixed to the pressing member 20 in such a manner as to protrude into a hole 11 in the support table 10 when the pressing member 20 is pressed, while it comes out of the hole 11 in the support table 10 when the pressing member 20 is restored to its original position by the coil spring 22. An eyelet supporting portion 31 is provided at a lower end of the punch 30 for insertingly support a plurality of eyelets in a laminated state in which they adhere to each other, so that when the punch 30 penetrates through a sheet of paper, an eyelet at a lowermost position adheres to the periphery of a hole formed in the sheet of paper.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punch for punching a hole in a paper and at the same time for attaching a hook around the hole.

[0002]

2. Description of the Related Art Punches for punching holes at the edges of paper for binding paper are roughly classified into one-hole punches and two-hole punches. For example, 2
The hole-type punch generally includes an abutment, a pressing member mounted on the abutment so as to be able to advance and retreat with respect to the abutment, and engaging the pressing member and the abutment to attach the pressing member to the abutment. A spring biasing in the direction away from the abutment, and fixed to the pressing member so that when the pressing member is pushed toward the abutment, it enters the hole of the abutment, and when the pressing member returns by the spring, it comes out of the abutment hole. And a punch. The punch makes two holes in the paper, and binds to the file using these holes.

[0003]

By the way, when binding a certain number of sheets of paper, there is not much problem.
In particular, when only one sheet is bound, since only a hole is formed in the paper, the paper is easily torn from the hole to the end of the paper. For this reason, after a hole is formed by a punch, a stop is attached around the hole to reinforce the hole. Generally, a plurality of eyelets are attached to a sheet, and are used by peeling one by one from the sheet.

[0004] However, it is not only necessary to separately perform the hole making with the punch and the fitting with the stop, and if the stop is not accurately positioned around the hole once made and then attached, the position of the fitting is required. The work is troublesome and time-consuming, for example, the holes may be partially closed due to misalignment.
Accordingly, the present invention has been made in view of such a problem, and an object of the present invention is to provide a punch which can easily and quickly perform a hole forming, a fitting, and a mounting.

[0005]

In order to achieve the above object, a punch according to the present invention comprises an abutment, a pressing member attached to the abutment so as to be able to advance and retreat with respect to the abutment, and a pressing member. An urging member that engages with the abutment and urges the pressing member in a direction away from the abutment; and a pressing member that presses toward the abutment, protrudes into the hole of the abutment, and is pressed by the urging member. In a punch provided with a punch fixed to a pressing member so as to come out of a hole of an abutment when the member returns, a lower end portion of the punch is provided with a staple supporting portion for inserting and supporting a staple, and the punch is provided. When the paper penetrates, the eyelet is stuck around a hole formed in the paper.

In this punch, if a hole is made in the paper in the same manner as a normal punch, a staple is attached to the periphery of the hole at the same time, and the piercing and the staple attachment are performed at the same time. There is no need to do it and the work is quick and simple.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments. FIG. 1 is a sectional view of a main part of a punch according to the embodiment, and FIG. 2 is a plan view thereof. The punch shown in FIG. 1 is a one-hole type, and has an abutment 10 and an abutment 10 on the abutment 10.
A pressing member 20, which is also capable of moving forward and backward, is engaged with the pressing member 20 and the support 10 (guide plate 19), and moves the pressing member 20 away from the support 10 (upward). A biasing coil spring (biasing member) 22, which pushes into the hole 11 of the abutment 10 when the pressing member 20 is pressed toward the abutment 10, and when the pressing member 20 is returned by the coil spring 22, the abutment of the abutment 10. A punch 30 fixed to the pressing member 20 so as to come out of the hole 11.

The abutment 10 has a hole 1 through which the punch 30 is inserted.
1, a paper waste container 12 for storing paper pieces formed by punching
A cover 15 is detachably attached to the bottom of the abutment 10. By removing the cover 15, the paper pieces accumulated in the paper waste accommodating section 12 can be taken out. A support plate 17 is fixed on the abutment 10 by a thumb screw 18.
The guide plate 19 is fixed to a through hole formed in the base 7.

The guide plate 19 has a double cylindrical shape on the upper side, and its annular leg portion 19 a is located along the inner peripheral surface of the through hole of the support plate 17. A coil spring 22 is arranged from the outside of the guide plate 19 to the pressing member 20.
One end (lower end) of the coil spring 22 engages the guide plate 19,
When the other end (upper end) is engaged with the pressing member 20, the pressing member 20 is urged upward. A punch 30 is inserted into a hollow portion inside the guide plate 19, and an upper end of the punch 30 is fixed to the pressing member 20 by a screw 24. Therefore, if the pressing member 20 is pressed down, the punch 30
And move downward together. If you stop pressing, punch 3
0 returns to the original position (the state of FIG. 1) by the urging force of the coil spring 22 together with the pressing member 20. Further, when the cutting edge of the punch 30 is worn and the sharpness becomes poor, the screw 24 can be removed and the punch 30 can be replaced.

[0010] At the lower end of the punch 30 is inserted a
The supporting support 31 is provided. The supporting support 31 in this embodiment is a protruding plate that protrudes from the peripheral surface of the punch 30 in a direction perpendicular to the axial direction of the punch 30. A space surrounded by a portion of the punch 30 below the fitting supporting portion 31 and the leg 19a of the guide plate 19 is a fitting storing portion 32 for storing the fitting, and the fitting storing portion 32 includes The eyelet is housed in a state inserted into the punch 30.

As shown in FIG. 3, the staple housed in the staple housing portion 32 is a laminated body 40 in which a plurality of staples 41 are mutually adhered and laminated. Each eyelet 41 has a hole 42 for passing through the punch 30. This hole 4
The diameter of 2 is somewhat smaller than the diameter of the punch 30, so that each of the limbs 41 (that is, the laminated body 40) does not drop from the punch 30 when inserted into the punch 30. or,
An adhesive is applied to the lower surface 41a of the eyelet 41,
In the stacked state, the lower surface 41a of the upper staple adheres to the upper surface 41b of the lower staple. In this case, the lower surface 41a is set so that the adhesive force of the lower surface 41a to the paper is stronger than the mutual adhesive force of the staples and the engaging force of the staples to the punch 30, so that only one of the staples 41 is a laminate 40 and It separates from the punch 30 and easily adheres to the paper.

The pressure-sensitive adhesive is not particularly limited, and may be, for example, a pressure-sensitive adhesive used for office paper pieces that can be pasted and peeled off. Also, the claws need not be the laminated body 40, and may be provided one by one in the clad accommodating portion 32, but it is more convenient to use the laminated body 40 as it is. Next, the operation of the punch will be described with reference to FIG. The staple support 40 of the punch 30 is provided with the staple laminate 40 shown in FIG. Then, the paper P is set at a predetermined position in the same manner as a normal punch, and the pressing member 20 is pressed down (see FIG. 4A). Then, the punch 30 descends together with the pressing member 20, and the tip of the punch 30 enters the hole 11 of the support 10, a hole is formed in the paper P, and the removed piece of paper P ′ falls into the paper waste container 12. . At the same time, the lowermost eyelet 41 of the laminate 40 is pressed around the hole of the paper P.
It is attached (see FIG. 4 (b)).

Thereafter, when the pressing of the pressing member 20 is stopped, the punch 30 returns to the original position together with the pressing member 20 by the urging force of the coil spring 22. At this time, as described above, the adhesive force of the staples 41 to the paper is stronger than the adhesive force of the staples 41 and the engaging force of the staples 41 to the punch 30. 30 and remains attached to the paper P (see FIG. 4C). As a result, in FIG.
Is formed at the same time as the hole Pa is formed, and a hole 41 is attached around the hole Pa, and the hole Pa is reinforced by the hole 41. However, although two holes are shown in FIG. 5, it goes without saying that two holes may be formed with the one-hole punch of FIG.

FIG. 6 is a sectional view of a main part of a punch according to another embodiment, and FIG. 7 is a plan view (partially omitted) of the punch. This punch is a two-hole type punch, and the structure other than the lower end of the punch is almost the same as a normal two-hole type punch. That is, the abutment 80
Has a hole 81 into which the punch 100 is inserted, and a paper waste accommodating portion 82 for accommodating a removed paper piece. A cover 85 is detachably attached to the bottom of the support 80. Thumbscrews 9 on abutment 80
A guide plate 89 is attached to a through hole of the support plate 86 fixed by 8, and a punch 100 is inserted through the guide plate 89.

On the other hand, a mounting plate 87 for swingably mounting the pressing member 90 is vertically erected on the supporting plate 86, and a horizontal supporting piece 88 into which the punch 100 is inserted is provided above the mounting plate 87. Is provided. The support shaft 95 that vertically penetrates the punch 100 is inserted through a slit (not shown) formed in the mounting plate 87 so as to move as the punch 100 moves up and down.

The pressing member 90 is supported by a mounting plate 87 so as to be able to move up and down (swing) by a fulcrum shaft 91. Fulcrum shaft 9
A spring 92 (only one side is shown in FIG. 7) is wound around 1, and one end (lower end) of the spring 92 is engaged with the support plate 86, and the other end (upper end) is engaged with the pressing member 90. The pressing member 90 is urged upward. The punch 100 has a fitting supporting portion 101, and a space surrounded by a portion below the fitting supporting portion 101 and the guide plate 89 is a fitting receiving portion 102.

In this two-hole type punch, if a hole is formed in the paper in the same manner as a normal punch, two holes are formed in the paper and at the same time, a stop is attached around each hole (see FIG. 1). 5). In this case, two holes are drilled and snap-fitted at a time, which is convenient.

[0018]

As described above, according to the punch of the present invention, when a hole is formed in a sheet of paper in the same manner as a normal punch, a staple is simultaneously attached to the periphery of the hole, and the piercing and the staple are attached. Are performed at the same time, so that it is not necessary to perform the operations separately as in the prior art, the operation is quick and simple, and the stopper can be accurately mounted around the hole.

[Brief description of the drawings]

FIG. 1 is a sectional view of a main part of a punch according to an embodiment.

FIG. 2 is a plan view of the punch of FIG.

FIG. 3 is a view showing a staple laminate to be mounted on the punch of FIG. 1;

FIG. 4 is a schematic cross-sectional view for explaining the operation of the punch in FIG.

FIG. 5 is a view showing a sheet on which holes have been punched and snap-fitted by the punch of FIG. 1;

FIG. 6 is a sectional view of a main part of a punch according to another embodiment.

FIG. 7 is a partially omitted plan view of the punch of FIG. 6;

[Explanation of symbols]

 10, 80 Abutment 11, 81 Hole 20, 90 Pressing member 22, 92 Spring (biasing member) 30, 100 Punch 31, 101 Stopper support 40 Stopper laminate 41 Stopper P paper

Claims (6)

[Claims] An abutment, a pressing member mounted on the abutment so as to be able to advance and retreat with respect to the abutment, and engaging with the pressing member and the abutment, moving the pressing member away from the abutment. An urging member to be urged, and fixed to the pressing member so as to enter into the hole of the abutment when the pressing member is pressed toward the abutment and to come out of the hole of the abutment when the pressing member is returned by the urging member. In the punch provided with the punch, provided at the lower end of the punch is a stop supporting portion for inserting and supporting the stop, when the punch penetrates the paper, around the hole formed in the paper. A punch characterized in that it is attached to a punch. 2. The method according to claim 2, wherein the plurality of staples are inserted and supported by the staple support portion in a laminated state by sticking each other, and only the lowermost staple is stuck around a hole formed in the paper. The punch according to claim 1, characterized in that: 3. The punch according to claim 2, wherein said staples have an adhesive force to paper which is stronger than an adhesive force between the staples. 4. The punch according to claim 1, wherein the stop supporting portion is a protruding plate projecting perpendicularly to an axial direction of the punch from a peripheral surface of the punch. 5. The punch according to claim 1, wherein said pressing member has one punch. 6. The punch according to claim 1, wherein said pressing member has two punches spaced from each other.